Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.

Post-1925 amplifying valves, frequency changers
and signal diodes

Type

Description

Filament

Anode

Auxillary Grid

Grid

r_a

g_m/g_o

R_L

P_o

R_k

Base ^{(1)Pin-out details for non-exhibits can be found with the base details.}

Year

Volts

Amps

Volts

mA

Volts

mA

-V

kΩ

mA/V

kΩ

Watts

Ω

Type

Ref

 Ensign

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless

212HF

Triode

2.0*

0.12

80

-

-

45.0

0.29

B4

1

1928

212LF

AF triode

2.0*

0.12

40-80

-

-

0-3

20.0

0.35

B4

1

1926

234PV

Output triode

2.0*

0.34

60-120

-

-

0-6

12.0

B4

1

406HF

Triode

4.0*

0.06

80

-

-

40.0

0.37

B4

1

1926

406LF

AF triode

4.0*

0.06

80

-

-

18.0

0.44

B4

1

1926

412PV

Output triode

4.0*

0.12

120

-

-

3-9

12.0

0.67

1

1926